What the OPA4189IDR is and where it fits
The Texas Instruments OPA4189IDR is a quad-channel, general-purpose op-amp with a 14 MHz gain bandwidth product and a 20 V/µs slew rate. It delivers rail-to-rail output swing across a 4.5 V to 36 V supply range, making it a flexible building block for signal conditioning in industrial control, motor-drive feedback, and test equipment. The 14-SOIC package fits standard surface-mount assembly lines, and the -40°C to 125°C temperature range covers most industrial and automotive cabin environments.
Key ratings and what they mean for the BOM
Rail-to-rail output with 65 mA per channel drive lets this op-amp swing close to the supply rails into moderate loads — useful for driving ADC inputs, multiplexers, or short cable runs without a separate buffer stage. The 70 pA input bias current is low enough for most high-impedance sensor interfaces, but not as low as CMOS-input competitors.
Package and mounting
The 14-SOIC package (3.90 mm body width) is a standard footprint shared by many quad op-amps. No special pad geometry or thermal vias are needed for this 1.3 mA per channel part.
Sourcing and lifecycle
TI lists the OPA4189IDR as Active — no end-of-life notice, no last-time-buy window. For BOM planning, this means no near-term obsolescence risk; you can qualify it for new designs without a sunset clock.